Introduction:
HFC-227ea Agent (1,1,1,2,3,3,3-heptafluoropropane gas) is a compound of carbon, fluorine and hydrogen (CF3CHFCF3). It is colorless, odorless and electrically non-conductive. It suppresses fire by a combination of chemical and physical mechanisms without affecting the available oxy-gen. This allows personnel to see and breathe, permitting them to leave the fire area safely. HFC-227ea heptafluoropropane gas Agent has acceptable toxicity for use in occupied spaces. Although HFC-227ea Agent is considered non-toxic to humans in concentrations necessary to extinguish most fires, certain safety considerations should be observed when applying and handling the agent. The discharge of HFC-227ea heptafluoropropane gas Agent may create a hazard to personnel from the un-decomposed agent itself and from the decomposition products which result when the agent is exposed to fire and other hot surfaces. Exposure to the agent is generally of less concern than is exposure to the decomposition products. Unnecessary exposure to the agent or the decomposition products should be avoided.
Toxicity
In tests, the acute toxicity of HFC-227ea Agent was shown to be equivalent to that of Halon 1301. HFC-227ea Agent has been evaluated for cardiac sensitization through test protocols approved by the US EPA. The EPA’s SNAP Program classifies HFC-227ea Agent as acceptable for use as a total flooding agent in occupied spaces. Refer to the SNAP program rules for more information.
Cleanliness
HFC-227ea Agent is clean, leaves no residue, thereby eliminating costly after-fire clean-up, and keeping expensive “down-time” to a minimum. Most materials such as steel, stainless steel, aluminum, brass, and other metals as well as plastics ,rubber and electronic components are unaffected by exposure to HFC-227ea Agent.
Use
HFC-227ea Agent is used in total flooding fire suppression systems. It is stored in steel containers, and is super-pressurized with nitrogen to aid in expelling the agent. The discharge time is 10 seconds or less. The maximum fill density of the agent storage is 70 lb./ft.3.
Physical properties:
Property | |
Chemical Name | 1,1,1,2,3,3,3-Heptafluoropropane |
Chemical Formula | CF3CHFCF3 |
Molecular Weight | 170.03 |
Boiling Point, 1 atm, °C (°F) | –16.34 (2.59) |
Freezing Point, °C (°F) | –131 (–204) |
Critical Temperature, °C (°F) | 101.75 (215.1) |
Critical Pressure, kPa (psia) | 2925.0 (424.24) |
Critical Density, kg/m3 (lb/ft3) | 594.25 (37.098) |
Liquid Density at 25 °C (77 °F), kg/m3 (lb/ft3) | 1387.7 (86.63) |
Density, Saturated Vapor at Boiling Point, kg/m3 (lb/ft3) | 8.4860 (0.52979) |
Vapor Density at 25 °C (77 °F) and 1 atm | 7.1461 (0.4461) |
Specific Heat, Liquid (cP) at 25 °C (77 °F), kJ/kg-°C (Btu/lb°F) | 1.1816 (0.28242) |
Specific Heat, Vapor (cP) at 25 °C (77 °F), kJ/kg-°C (Btu/lb°F) and 1 atm | 0.81327 (0.81327) |
Vapor Pressure, Saturated at 25 °C (77 °F), kPa (psia) | 454.73 (65.9) |
Heat of Vaporization at BP, kJ/kg (Btu/lb) | 131.77 (56.7) |
Thermal Conductivity, Liquid at 25 °C (77 °F), W/m–°C (Btu/hr-ft°F) | 0.060491 (0.034975) |
Thermal Conductivity, Vapor at 1 atm, W/m-°C (Btu/hr-ft°F) | 0.013336 (0.0077103) |
Viscosity, Liquid at 25 °C (77 °F), cP (lb/ft-hr) | 0.23935 (0.57901) |
Viscosity, Vapor at 1 atm, cP (lb/ft-hr) | 0.011590 (0.028038) |
Relative Dielectric Strength at 1 atm, 25 °C (77 °F) (N2=1) | 2.00 |
Solubility of Water in FM-200™ at 20 °C (68 °F), ppm | 600 |
Ozone Depletion Potential, ODP | 0.0 (CFC-11 = 1) |
Global Warming Potential, GWP (100 yr ITH. For CO2, GWP = 1) | 3220 |
Atmospheric Lifetime, yr | 34.2 |
TSCA Inventory Status | Reported/Included |
European List of New Chemical Substances | EINECS, Listed (207-079-2) |
Certificate:
UL listed and REACH registered
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